Life & Evolution

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SOCIAL DELIVERY Researchers have observed three cases of captive female bonobos serving as helpers for pregnant females about to give birth, a behavior typically viewed as exclusive to humans. Here, a group of wild bonobos includes a mother carrying her infant.

Sergey Uryadnikov/Shutterstock

DESPERATE BATTLE Eating disgusting leaves may save an Egyptian cotton leafworm (right) from the zombie-making Microplitis rufiventris wasp that a corn plant lured in with odors.

Matthias Held/University of Neuchâtel

BUG LOSS Insects, including honeybees (shown), would see their geographic ranges shrink the most under higher future warming scenarios.